The document provides answers to frequently asked questions about GPS trackers. It covers questions about SIM cards, registration, location tracking via SMS and online, and recommended upload commands. Key points addressed include:
- Recommending M2M SIM cards for lower cost without voice functions. GPRS and caller ID must be enabled.
- Troubleshooting a flashing green light by checking the SIM and signal strength.
- Verifying the SIM works by calling the device number or checking SMS replies.
- The importance of setting the correct APN for data uploads and the format for commands.
- Reasons a device may reply with LBS not GPS locations and steps to improve GPS reception.
- How to view real